1 # 2 # Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 # 5 # This code is free software; you can redistribute it and/or modify it 6 # under the terms of the GNU General Public License version 2 only, as 7 # published by the Free Software Foundation. 8 # 9 # This code is distributed in the hope that it will be useful, but WITHOUT 10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 # version 2 for more details (a copy is included in the LICENSE file that 13 # accompanied this code). 14 # 15 # You should have received a copy of the GNU General Public License version 16 # 2 along with this work; if not, write to the Free Software Foundation, 17 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 # 19 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 # or visit www.oracle.com if you need additional information or have any 21 # questions. 22 # 23 # 24 25 DESCRIPTION 26 27 This is replacement for CompileTheWorld (CTW) written on java. Its purpose is 28 to make possible the use of CTW in product builds. 29 30 DEPENDENCES 31 32 The tool depends on Whitebox API. Assumed, that the sources of whitebox are 33 located in '../whitebox' directory. 34 35 BUILDING 36 37 Simple way to build, just type 'make'. 38 39 Makefile uses environment variables 'ALT_BOOTDIR', 'BOOTDIR' as root-dir of jdk 40 that will be used for compilation and creating jar. 41 42 On successful building 'ctw.jar' will be created. 43 44 RUNNING 45 46 Since the tool uses WhiteBox API, options 'UnlockDiagnosticVMOptions' and 47 'WhiteBoxAPI' should be specified, and 'wb.jar' should be added to 48 boot-classpath: 49 $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar 50 51 Arguments can be paths to '.jar, '.zip', '.lst' files or directories with 52 classes, that define which classes will be compiled: 53 - '.jar', '.zip' files and directories are interpreted like in classpath 54 (including '<dir>/*' syntax) 55 - '.lst' files -- files with class names (in java notation) to compile. 56 CTW will try to find these classes with default class loader, so they should 57 be located in classpath. 58 59 Without arguments it would work as old version of CTW: all classes in 60 boot-classpath will be compiled, excluding classes in 'rt.jar' if 'rt.jar' isn't 61 first in boot-classpath. 62 63 Due CTW's flags also are not available in product builds, the tool uses 64 properties with the same names: 65 - 'CompileTheWorldPreloadClasses' -- type:boolean, default:true, description: 66 Preload all classes used by a class before start loading 67 - 'CompileTheWorldStartAt' -- type:long, default:1, description: First class 68 to consider 69 - 'CompileTheWorldStopAt' -- type:long, default:Long.MAX_VALUE, description: 70 Last class to consider 71 72 Also it uses additional properties: 73 - 'sun.hotspot.tools.ctw.verbose' -- type:boolean, default:false, 74 description: Verbose output, adds additional information about compilation 75 - 'sun.hotspot.tools.ctw.logfile' -- type:string, default:null, 76 description: Path to logfile, if it's null, cout will be used. 77 78 EXAMPLES 79 80 compile classes from 'rt.jar': 81 $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ${JAVA_HOME}/jre/lib/rt.jar 82 83 compile classes from all '.jar' in './testjars' directory: 84 $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ./testjars/* 85 86 compile classes from './build/classes' directory: 87 $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ./build/classes 88 89 compile only java.lang.String, java.lang.Object classes: 90 $ echo java.lang.String > classes.lst 91 $ echo java.lang.Object >> classes.lst 92 $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar classes.lst 93